SmartCalc Multi Tool

Calculator SmartCalc MultiTool puts 36 calculators in one free app — and every single one works with no internet connection at all. No account. No sign-in. No ads. No subscription. Nothing is locked behind a paywall, and nothing you type ever leaves your phone. 36 CALCULATORS, 7 CATEGORIES EVERYDAY • Calculator — arithmetic with memory keys and a movable cursor • Scientific Calculator — trigonometry, logarithms, powers, brackets, Ans • Percentage Calculator — percent of an amount, increase, decrease, marks • Unit Converter — 17 categories: length, mass, temperature, area, volume, speed, data, pressure, energy, power, force, angle, frequency, fuel economy • Number to Words — for cheques and invoices, Indian and international FINANCE • EMI Calculator — monthly instalment, total interest, extra-payment savings • Salary Calculator — take-home pay after overtime, tax and deductions • GST / Tax Calculator — add tax, or work backwards from a tax-inclusive price • Interest Calculator — simple interest, compound interest, fixed deposits • Investment Calculator — SIP, lumpsum and recurring deposit projections • Currency Converter — offline, using rates you set yourself • Tip & Bill Split — tip, total, and exactly what each person owes • Fuel Cost Calculator — trip cost, mileage, cost per passenger • Electricity Bill — from a meter reading, or appliance by appliance BUSINESS • Profit Calculator — profit after commission, gateway fees and shipping • Discount Calculator — one item or a whole basket, with tax • Margin & Markup — price from a target margin, or margin from a price • ROI Calculator — return, ROAS and payback period • Break-even Calculator — units needed to cover fixed costs, margin of safety HEALTH • BMI Calculator — body mass index and your healthy weight range • Calorie Calculator — BMR, TDEE and macros for your goal • Body Fat Calculator — US Navy tape method • Ideal Weight — Devine, Robinson, Miller and Hamwi formulas • Water Intake — daily target from weight, activity and climate • Pregnancy Due Date — due date, gestational age and trimester MATH & DEVELOPER • Fraction Calculator — exact fraction arithmetic, no rounding • Statistics — mean, median, mode, variance, standard deviation, quartiles • Number Base Converter — binary, octal, decimal, hex and bitwise operations • Roman Numerals — both directions, strict standard notation • Quadratic Equation — real and complex roots, vertex, discriminant • GPA Calculator — weighted 4.0 scale DATE & TIME • Age Calculator — exact age, the day you were born, next birthday countdown • Date Calculator — days between dates, add or subtract, business days • Time Duration — hours between two times, built for timesheets • Speed, Distance & Time — solve for any one of the three, plus pace CONSTRUCTION — for civil engineers, contractors and site supervisors • Construction Quantity — CFT, SFT and RFT takeoff straight from dimensions. Add items, deduct doors and windows, mix feet, inches and metres freely, set your own block and tile sizes, and get material estimates: cement bags, sand, aggregate, bricks, tiles, paint and steel bar weight. WHY PEOPLE KEEP IT INSTALLED TRULY OFFLINE The app has no internet permission at all. Not "works offline" — it cannot connect. Nothing is tracked, nothing is collected, nothing is uploaded, ever. A GUIDE INSIDE EVERY CALCULATOR Not sure what a field wants? Tap "?" at the top of any calculator for a plain explanation, a worked example, and the formula used. SAVE, FIND AND SHARE YOUR WORK Save any result to History, grouped by calculator. Rename entries, search them, and export a calculator's results as a clean PDF that lands in your Downloads folder ready to print, email or send on WhatsApp. LOCK IT DOWN Protect the app with a 4-digit PIN or your fingerprint — you pick one, exactly like your phone's own lock.